Drill.



" t bLEWIS W, BANEY, FRANK 'E *BANEK AND JOHN., OSTERHOLT, or y rLArrEviLI-in, wiscONsiN.: i

' D'RIL'LL i i 815,002.' specificati@ afnemers Patent, '-.i ratentdmarchfia,1906. i

UNITED srArns PATENT OFF-ron. f i

Application ned Juno' 6.1905, serial No, 263,925,

Iok

. Be it known that we'L'EwIs W.A BANEY,

FRANK E.` BANE,'and Jon-N OSTERHOLT, .citizens of the United States, and .residents of Platteville, vin the county of'Grant andl e scribed and claimed.

' tion we provide a dri 1A, comprising a shank VIn the drawings, forming a part hereof,4 Figure 1 isra front elevation of our 4improvevment.. t Fig. 2 is a top plan view..` Fig.. 3 is .a section on the line 3 3 of Fig, l, and Fig.- 4 is a a bottom plan view.

In. vthe practical a plication Ofour inven- B,y provided with quadrantly-arranged` ribs or wingsl D, and a bit C, `comprisin `oppo- 4 sitelyedisposed cutting-blades c c on t e ends ofthe ribs. 'Upon the ribs are 'arran ed a series of lugs E, proj ecting'outwardlyv rom the are spirally arranged with respect to the drill,

. forming a right-hand spiral. `The ribs D are y .sloped outwardly Iadjacent tothe cuttingi width of the rib, while the' lugs project to a lesser extent. InJoperation the lugs move the blades, and the said blades occupy the full debrison the cutting-blade Outward in a manner somewhatjeimilar to the vanes of an auger. In using a`.drill as ordinarily' constructed it mustbe removed from the hole at frequent intervals -in'order that the debris .may be scraped out. The cuttings form a hardring back of the bit7 and cause considerable fric-A tion on the shank even when water isused. vlith Ourimprovement the turning of the drill to the right causes an Outward movef Vmen'tof the debris, the stroke of thedrill ast i sisting this movement, each lug moving the debris outward to a sufiicient extent that lit may be engaged by the succeeding lug on the next stroke,

evident that more orv less ribs might be used or even a plainA shank. Our inventlon 1n -its broadest sense comprises a drill-shank having a'r seriesof projecting lugs spirally arranged .on the shank.

' lIt will be. evident from the description'that our device issimple in construction, inexpensive, and is' 'fe'ry durable and that by its .use a great saving of time and labor is effected, since the drilling maybe carried .on

continuously without stoppin to remove l the waste and without the use O water:

e Having thus described our invention, what we claim'as new, and desire to secure by Letters Patent,is-

A vdrill adaptedfor reciprocating and rotating motion and `havingI a series of ribs eX- tending longitudinallyparallel to each other andv laterally at an angle to each other and ilaring outwardly at their lower ends and ribs and Obliquely placed with respect to the longitudinal center of the shank..l The lugs provided at said ends with cutting edges,

and eachlug having itsupper side inclined to the direction of length of its respective rib and sloping from said upper edge inwardly'to mergeat its lower endwith the Outer Aedge of the rib, all substantially as described, wherebyvupon the outward movement of the drill, the said lug will tend to move the waste or detritus outwardly-'and will :not retard lthe Vas and for the 'purpose set forth.

. Lewis WBANEY.

FRANK n. BANEY." JOHN OSTERHOLT.

Witnesses ROY DENNIS, .FRANK M. DYER.

'inward movement of the drill, the lugs form- 

